Convolvulus glomeratus Hochst. ex Choisy, Prodr. [A.P. de Candolle] 9: 401. 1845. (Choisy 1845: 401).

Wood, John R. I., Williams, Bethany R. M., Mitchell, Thomas C., Carine, Mark A., Harris, David J. & Scotland, Robert W., 2015, A foundation monograph of Convolvulus L. (Convolvulaceae), PhytoKeys 51, pp. 1-282 : 127-128

101. Convolvulus glomeratus Hochst. ex Choisy, Prodr. [A.P. de Candolle] 9: 401. 1845. (Choisy 1845: 401). Figure 13, t. 35-43

Type.

SAUDI ARABIA, Jiddah, Schimper 784 (lectotype G-DC, designated by Sa’ad 1967: 182); isolectotypes GOET, OXF!, P!, W!).

Description.

Perennial herb with prostrate, ascending or twining stems to 1 m, rootstock thick and somewhat woody, pubescent on vegetative parts; stems sometimes slightly woody. Leaves shortly petiolate, 1-4.5 × 0.5-1.5 cm, lanceolate or ovate, acute, base truncate to cordate, margin entire; petioles 0-5 mm long. Flowers 4-10 in axillary, pedunculate, villous, bracteate heads formed of compact scorpioid cymes; peduncles 1-4 (-7) cm long, straight or recuvedbracteoles 8-12 (-28) × 2.5-5 (-9) mm, ovate, acuminate, villous; outer sepals 8-12 × 3.5-4.5 mm, ovate, long-acuminate, broader than the inner sepals; corolla 8-12 mm long, white to pale blue, undulate, midpetaline bands pilose; ovary glabrous; style glabrous, divided c. 4 mm above base, stigmas ellipsoid, 1.5-2 mm. Capsule glabrous, seeds glabrous, tuberculate. [ Feinbrun-Dothan 1978: plate 58; Nowroozi 2002: 79 (plate), 105 (map); Collenette 1999: 229 (photo); Austin and Ghazanfur 1979: 24, 25 (plate); Jongbloed 2003: 312 (plate)]

Notes.

We recognise two varieties: